Gaya APA
Wyngaarden,James, ., Smith,Lloyd, . (1988).
Cecil textbook of medicine Volume 1 (18 th ed).
Philadelphia:
W.B Saunders Company.
Gaya MLA
Wyngaarden,James, ., Smith,Lloyd, .
"Cecil textbook of medicine Volume 1".
18 th ed
Philadelphia:
W.B Saunders Company,
1988.
print.